109440-87-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109440-87-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,4,4 and 0 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 109440-87:
(8*1)+(7*0)+(6*9)+(5*4)+(4*4)+(3*0)+(2*8)+(1*7)=121
121 % 10 = 1
So 109440-87-1 is a valid CAS Registry Number.